:root {
    --primary-green: #2ecc71;
    --secondary-green: #27ae60;
    --accent-green: #a8e6cf;
    --text-color: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    min-height: 100vh;
    color: var(--text-color);
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.dynamic-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(-45deg, #2ecc71, #a8e6cf, #3498db, #27ae60);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    z-index: -1;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

#login_box {
    width: 400px;
    padding: 40px;
    text-align: center;
    margin-bottom: 40px;
}

h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--text-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-color);
    opacity: 0.8;
}

input {
    width: 100%;
    height: 45px;
    padding: 0 45px;
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
}

input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

input:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-green);
}

button {
    width: 100%;
    height: 45px;
    background: var(--primary-green);
    border: none;
    border-radius: 25px;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
}

button:hover {
    background: var(--secondary-green);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
}

footer {
    text-align: center;
    padding: 15px 30px;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.animated-icons {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 30px;
    z-index: 100;
}

.animated-icons.left {
    left: 30px;
}

.animated-icons.right {
    right: 30px;
}

.icon-wrapper {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.icon-wrapper:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

.icon-wrapper:nth-child(2) {
    animation-delay: 0.5s;
}

.icon-wrapper:nth-child(3) {
    animation-delay: 1s;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

@media (max-width: 768px) {
    #login_box {
        width: 90%;
        max-width: 400px;
    }

    .animated-icons {
        display: none;
    }
}